"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

This statue of one of baseball’s greatest pitchers looks like something out of a sci-fi horror movie.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

One of the largest artillery pieces in the world sits in a Washington D.C. parking lot.

The U.S. Navy’s preposterously detailed mini battleship took 77,000 hours to complete.

Part of a WWII submarine is lurking outside the Washington Navy Yard parking lot.

Outside the Department of Transportation, a collection of artifacts honors the history of how we get around.

These unusual rooms on wheels are holdovers from the 1960s.

Her final resting place was intended to be modest and private, but the power of her popularity continues to draw visitors.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

Wicker sculpture that towers over the M5 motorway.

Centuries of human activity have forged an eerie landscape of ruins and craters on an exposed and windswept hilltop.

Britain’s longest ancient monument, this great 8th century earthwork was built to mark the boundary between what would become England and Wales.

You can enjoy a (possibly haunted) stay at the medieval Norman castle that was once a favorite hunting lodge of King John.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

A 142-foot-tall Q-tip on Bristol's skyline.

A plaque claims this artwork outside a children's hospital was used in the 1998 Quidditch World Cup.

A historic, reportedly haunted pub that provided inspiration for several famous adventure novels.

An array of ancient artifacts from Bronze Age Bristol and other civilizations are housed in this museum.

It houses a menagerie of wondrous taxidermy specimens from around the world, including the remains of a famous gorilla.

A quaint hamlet of nine cottages around a small green near Blaise castle.

There's a labyrinth of manmade tunnels stretching for over an acre beneath Bristol.